Flexible draft connection for adding-machines.



H. K'UNTZLBR.

FLEXIBLE DRAFT CONNECTION FOR ADDING MACHINES.

APPLICATION IlLED JAN.19,1909.

1,080,5 1 6, Patented Dec. 2, 1913.

4 SKEETSSHEET 1.

A ttest: J [w Inventor:

H. KUNTZLER.

FLEXIBLE DRAFT CONNECTION FOR ADDING MACHINES.

APPLICATION FILED JAN.19.1909. 1,()8Q 5 1 6, Patented Dec. 2, 1913.

4 SHEETSSH BET 2.

Attest: J6 Inventor:

3.: KT INTZLER.- FLEXIBLE DRAFT CONNECTION FOR ADDING MACHINES.v

APPLIGATIQN FILED JAN. 19, 1909.

1,() 8 O, 5 1 6; Patented Dec. 2, 1913.

4 SHEETS-SHEET 3.

J6 Inventor:

i Attic 'sarily: or actually in unison.

UNI-TED strArEs 'PATENT onrion.

K'UNTZLER, 0F WILKES-BARREL PENNSYLVANIA, ASSIGNOBI, BY MESNE ASSIGNMENTS, TO AID-DER MACHINE COMPANY, A CORPCBATION OF PENNSYL- VA..NIA.

FLEXIBLE DRAFT CONNECTION FOR ADDING-MACHINES.

' Specification of LettersPatentr Patented Dem-2, 1913.

Application filed J'anuary 19,1809. Serial No. 473,041.

To all whom it may concern of which the following is a specification.

p This invention relates to the operating mechanism ofadding machines, and similar mechanisms and its noyelty consists. in the construction and adaptation'of the parts. as

hereinafter pointed out. Ina co-peiiding application for Letters Patent of the i uited States, Serial No. eLTQJOl filed on the 18th day of J anuary,"l9 09, there is described an operating mechanism for such a machine comprising in brief a main shaft from which the mechanism of the adding machine is mowed, an auxiliary rock shaft, an operating handle, a rigid connection between the handle and the auxiliary shaft, a flexible connection between the auxiliary shaft and the main shaft and means for automatically locking the auxiliary shaft, and consequently limiting its movement and that of the handle. at

the end of. the stroke of the handle, and before the main-shaft has quite completed-its stroke and means operated from the main shaft: for unlocking the auxiliary shaft as the main shaftcompletes its stroke. In the mechanism described in that patent, the movements ofthe two shafts were not neces- In fact. the auxiliary shaft on the forward stroke .was intended to be slightly ahead of the main shaft and the flexible connection between the two shafts, I which was. in theform of. a draft spring, was always stretched considerably' in the transmission of power. This form of device is useful where a fluid go ernor or similar controlleris used to regulate the speed of'the main shaft and isespecially useful'where the auxiliary shaft is actuated throughamotor. r o The mechanism which is the Sllbjtt matter of the present application represents a state of the development of the mechanism intern'iediate that described in the application for a patent and the prior state of the art when a rigid connection existed between the handle and themain-shaft of the machine.

This invention comprises, as before, a

: bolts'21. or in any suitable manner.

.main shaft, an auxiliary shaft and a flexible connection between them, but theflexible connection is made of a"'draft spring; or springs, of such strength that normally the main shaft moves in unison with the vauxiliary shaft. There is also a lock but it does not operate exceptin an emergencywhen the strain on the draft spring is greater than a draft strain due to theaccidental or ther detention ofthe main shaft. Then the lock. which includes a detent; is brought into play and'locks the auxiliary sha ft'against a reverse movement until the main shaft is released and is permitted to move forward when in so doing it actuate-s a releaser which movesthe detent away from its engagement with the auxiliary shaft.

ln the drawings, Figure 1 is a top plan iew and. partial section of a portion of an adding machine embodying the invention;-

of the same parts: Fig. 3'is a side cleyation of the locking mechanism, the, detent being in normal position:.Fig. 4 is a side eleva tion of the parts shown in Fig. 3 showing the detent in the act of being released. and Fig 5 is a side elevation of the same parts showing the detent holding the auxiliary shaft locked. i I

In the drawings, 1 is the base of the machine and-2 is one of the side fra1nes,'of which there are two, one on each side of the machine.

'3 is the main shaft of the machine supported in'suitable bearings.

Secured rigidly to the main shaft in any suitable manner is valorack'il S0 to which by a pivot 300 is fastened -aQ-lin'k 31 to. which is secured a draft spring 32. secured at its opposite end to a link 33 fastened by a pivot 330 to a bracket 34 secured in turn to' an auxiliary' shaft 35 mounted in beariugs'in :one'ofthe side frames Q-and in'a sub-frame 2-0; secured to. the base 1 of the machine by All of these parts'are. in the constrlu-tion shown. arranged in. pairs in crder that the work may Fig. 2 is a side elevation. and partial -'ecti(nl' be divided between the two draft springs which is'secured by a pivot 301 to an oscildating member 302 serving as a crank and which is secured to a hollow shaft 303 adapted to be oscillated from a handle 304 through a hub 305 with which itis connected.

When the handle 304 is moved forward the hollow shaft 303 is'oscillated. This motion is transmitted through the rigid link 39 to the crank '37 which oscillates the auxilshaft 35 to move the brackets 34 and through them the draft springs 32, brackets and main shaft 3. It is obvious that if the draft springs 32 are strong enough-to transmit the motion referred to without stretching them the main shaft .3 is moved from the handle 304 substantially in' the same manner as when the handle is secured directly to the main shaft itself.

Mounted to swing on a'pivot 309 on the sub-frame 20 is 'a' detent 310 towhich is hinged a link311-to the' other end of which.

is secured a spring 312 whose other end is fastened to apermanent part of the machine. The detent 310 has a slot 365 adapted to be engaged by a'pin 366 projectinglat- .erally from the sub-frame 20. On the end of the detent is mounted a roller-364, adapted tobe supported upon the edge 363 of a snail back cam 360 secured tothe' auxiliary shaft 35 and provided with a shoulder 362.

Mounted to swing on a pivot 340 is a re-.

' leaser arm 341 comprising a tip 342 adapted to contact with ,the latch arm 310 and a tail 343 uponwhich is pivoted a roller 344. A

- spring 345 secured to the arm 340 and a tension u on the tail 343. v

main sha t 3 is a cam'plate 346 having a 40 convex surface 347 and fi-xed part of the machine keeps a constant a recessed or concave surface 348.. v I

' Whenthe machine is normal, the springs 32 are 'of'suflicient strength to transmit the motion of the auxiliary shaft 35 to the main shaft 3- so that they practically move in unison and the roller 364 is held against the "edge 363 of the cam 360 by the tension of the spring 312, and moves idly back and for-.

ward thereon as the shaft 35 is oscillated.

But' suppose that forany reason, for in-' stance, a jam among the actuating devices of the adding machine, the main shaft 3 is detained. Thenfthe auxiliary shaft 35 continues to move,.stretches' the spring 32 and the roller 364 finally falls, or is pulled from Secured to the moved, then as the cam 346 moves forward, the roller 344 on the releaser 341 reaches the recess 348 and under the influencev of the spring 345, which is stronger than the spring 312, the releaser is tilted andits tip 342 contacts with the under edge of. the de'tent .310

and lifts its roller 364 out of engagement with the'shoulder 362 on the cam 360 and unlocks the auxiliary shaft as shown in Fig. 4'. The pivot 366 and; slot. 365 serve to'l'imit the extent of movement of the detent 310.

.The hub 305 of the handle 304 is provided with a notch or recess 370 (see Figs. 1 and 2) adapted to engage a tip 371 of a latch bar 372 placed within a hollow arm 37 3-projecting radially from the sleeve 303. The

hollow' arm is internally threaded'and is adapted to receive a-cap 374 provided with a recess 375to receive the end of the latch bar 372. A spring 376 is adapted to surround the latch bar 372 and presses against the-cap 374 and the rear 377 of the tip 371 normally moving the latter toward the hub 305. An aperture 378 is provided inv the sleeve 303 to receive the'tip 371.

The parts just described are normally in the position shown in Fig. 2. When the handle is rotated anti-clockwisethe tip 371 is engaged by the notch 370 of the hub 305 and this hub 305 and the sleeve 303 move.

together and the power is transmitted to the link39. When the end of the stroke is reached the parts of the machine are returned through the agency. of the main spring of the machine irrespective of the position of the handle and the latter is moved backward through the engagement of the latch bar 372 with the notch 370, butthe handle may be moved backward without-rm tating the sleeve 303, because the hub 305 will,.'if rotated backward with respect to the I sleeve 303, force the latch bar 372 inwardly against the tension of the spring 376 and f will keep the latch bar 372 in that position until the hub 305 is rotated far enough to allow its notch 370to again engage the tip 371. This construction enables the: handle to be quickly and readily removed and as easily inserted in place without the use of screws, bolts or other fastening devices.

.What I claim asnew'isz- 1. In a mechanism of the character described, comprising an oscillatory main shaft, I

an oscillatory auxiliary shaft and a flexible I connection between them adapted normally to move the main shaft in unison with the auxiliary shaft when the latter is oscillated,

-means adapted to hold the auxiliary shaft against a reverse oscillation should the main shaft be detained. consisting of a rotating support on the ma shaft, a detent normally resting inactive on said support, and

a recess in'said support whereby the detent. will fall into a locking position.

2. In a mechanism of the character described, comprising an oscillatory main shaft,

35, snail back cam on the shaft, a hinged detent' an oscillatory auxiliary shaft and a flexible connection'between them adapted normally to move the main shaft in unison with the auxiliary shaft when the latter is oscillated, means adapted to hold the auxiliary shaft against a reverse oscillation should the main shaft be detained, consisting of a cam on the shaft, and a detent resting thereon in the normal. operation of the machine, and adapted to engage therewith when the cam has rotated through a predetermined arc.

3. In a mechanism of the character described, comprising an oscillatory main Sl1aft, an oscillatory auxiliary shaft and a flexible connection between them adapted normally to move the main shaft in unison With the auxiliary shaft when the latter is oscillated, means adapted to, hold "the auxiliary shaft against a reverse oscillation should the main shaft be detained, consisting of a snail back cam on the shaft, a hinged detent supported thereon against the force of gravity and a tip adapted to engage the shoulder of the cam when the latter has rotated beyond a predetermined point.

- 4.1m a mechanism of the character described comprising an oscillatory main shaft, an oscillatory auxiliary shaft and a flexible connection between them adapted normally .to move the main shaft in unison With the auxiliary shaft when the latter is oscillated, means adapted to. hold the auxiliary shaft against a reverse oscillation should the main shaft bedetai ed, consisting of a yieldingly held against the edge of the cam and adapted to engage its shoulder when the cam is rotated.

5,111 a mechanism of the character described, comprising an oscillatory main ,shaft, an oscillatory auxiliary shaft and a flexible connection between them adapted normally to move the main shaft in unison with the auxiliary shaft when the latter is oscillated, means adapted to hold the auxiliaryshaft against the reverse oscillation should the main shaft be detained, consisc' ing of a rotating support on the main shaft, a detent normally resting l1'lt1(3ti\t n said support, and a recess in said support whereby the detent will fall into a locking position, and means adapted to limit the extent of the movement of the detent.

(3. In a n'icchanism of the character described, comprising an oscillatory main shaft, an oscillatory auxiliary shaft and a flexible connection between them adapted normally to move the main shaft in unison with the auxiliary shaft when the latter is oscillated, means adapted to hold the auxiliary shaft against the reverse oscillat on should the main shaft be detained, conslsting of a rotating support on the main shaft, a detent normally resting inactive on said support, and a recess in said support whereby the detent will fall into a locking position, and means adapted to limit the extent of the movement of the detent, consisting of a slot and pin.

'7. In a mechanism of the character described, comprising an oscillatory main shaft. an oscillatory auxiliary shaft and a flexible connection between them adapted normally to move the main shaft in unison with the auxiliary shaft when the latter is oscillated, means adapted to hold the auxiliary shaft against a reverse oscillation'should the main. shaft be detained, consisting of a snail backicam on the shaft. a hinged detent adapted to contact with the edge of the cam, a. spring adapted to maintain such contact and a shoulder on the cam with which the dctent is adapted to engage.

8. In a mechanism of the character de scribed, comprising an oscillatory main shaft. an oscillatory auxiliary shaft and a flexible connection between them adapted normally to move the main shaft in unison with the auxiliary shaft when the latter is oscillated, means adapted to hold the auxiliary shaft against a reverse oscillation should the main shaft be detained, and a releasing device moved from the main shaft adapted to interrupt the function of the holding device when the main shaft ceases to be detained.

0. lit a mechanism of the character described, comprising an oscillatory main shaft, an oscillatory auxiliary shaft and a flexible connection between them adapted normally to move the main shaft in unison with the auxiliary shaft when the latter is oscillated, means adapted to hold the auxiliary shaft against a. reverse oscillation should the main shaft be detained, and a. releasing device moved from the main shaft adapted to interrupt the function of the holding device when the main shaft ceases to be detained, consisting of a tiltable'lever, means adapted normally to hold it away from the auxiliary shaft detainii'ig means and means moved from the main shaft to tilt the lever against such means. I I

10. In a mechanism of the character described comprising an oscillatory main shaft, an oscillatory auxiliary shaft and a flexible connection between them adapteth an oscillatoryauxiliary shaft and a flexible connection between them adapted normally to move the main shaft i unison with the auxiliary shaft when the latter is oscillated, a movable detent adapted to hold the auxiliary shaft against a reverse oscillation until the main shaft ceases to move, and a releasing device moved from the main shaft against said detent.

5 12. In a mechanism of the character described, comprising an oscillatory main ,shaft, an oscillatory auxiliary 'shaft and a flexible connection between them adapted normally to move the main shaft in unison with the auxiliary shaftwhen the latter is oscillated, a movable detent'ada'pted to'hold the auxiliary shaft against a reverse oscillationuntil the main shaft ceases to move, and a releasing device moved from the main shaft against said detent, consisting of a tiltable lever provided with a tip. adapted to contact with the detent, a cam on the main shaft adapted normally; to hold the lever out of such [contact and provided with a recess into which aportion of the leyercan ,be forced to'perinit' sueh contact.

13. In a mechanism of the character 'described, comprising an oscillatory main shaft, an oscillatory au-xiliary' shaft and a. flexible connection between them adapted normally to move the main "shaft in unison with the auxiliary shaft when the latter is oscillated, a movable detent a'daptedjo hold the auxiliary shaft against a. reverse oscillation-until the main shaft ceases to move, and 'a' releasing device moved from the main shaft against said detent, consisting of a lever pro- 'vided with a tip adapted to be moved against the detent and with a tail, a cam on .the main shaft and 'a spring adapted nor- 'mally to hold the tail against the cam,-

14; I11 a mechanism of the character described, c'omprising, an oscillatory -main shaft, an oscillatory auxiliary shaft and a 40 flexible connection between them adapted normally=to lnovethe main shaft in unison with the. auxiliary shaft when the latter is oscillated, a detent adapted toidetain the auxiliary shaft and a'releaser adapted to interrupt the function of the detent. 15. In a mechanism of the character clescribed, comprising an oscillatory main shaft, a cam mounted thereon, an oscillatory auxiliary shaft, a cam mounted thereon, and a flexible connection between the shafts adapted. normally to move the main shaft in auxiliary shaft, a cam mounted thereon, and

a flexible connection between the shafts adapted normally to move the main shaft in unison with the auxiliary shaft when the latter is oscillated, a detent adapted to de tain the auxiliary shaft, and a releaser adapted tointerrupt the function of the .de-

mounted thereon, and a flexible connection between the shafts adapted normally to move the main shaft in unison with the auxiliary 'shaftwhen the latter is oscillated, a detent adapted to detain the auxiliary shaft and it releaser adapted to interrupt the function of the detent, the detent being controlled by the cam on the auxiliary shaft and the releaser by the cam on the mam shaft.

1S.-Ina mechanism of thecharaeter, de-

scribed, comprising an oscillatory main shaft, a cam mounted thereon, an oscillatory auxiliary shaft, a cam mountedithercon, and

unison with the ,auxiliary shaft when the latter 1s osc1llated, a detent adapted to detain the auxiliary shaft, and a releaser adapted to mterrupt the function of the dctent, the'detent being controlledby the cam onthe auxiliary shaft and the releaser by f the cam on the main shaft, the detent and releaser being normally held against their respective ca'ms by springs.

19. In a mechanism of the character 'de-. scribed, comprising an oscillatory main shaft, a cam mounted thereon, an oscillatory auxiliary'shaft, a cam mounted t iercou. and a flexible connection between thesha'l'ts adapted normally tomove the main shaft in unison with the auxiliaryv shaft when the latter is oscillated, a'dctent adapted to .detain the auxiliary shaft, and a release]- adapted to interrupt the function of the. detent, the detent being controlled by the cam 011 the auxiliary shaft and "a releaser by the cam on the main shaft, the detent and re: leaserbeing'normally held against their respective cams'by springs.

Vitness my hand this fourth day of Jauu -ary, 1909, at New York, N. Y.

HENRY KUN'IZLER; 

